PROCEEDINGS OF SOCIETIES. 63 



Found on gravelly sea-coasts below high-water mark, walking with the wings 

 half raised, and in rapid vibration, without taking flight. In such a situation I 

 found, also, the empty puparia lying about, somewhat like those of a Chironomus. 

 I have observed the insect only in blustery weather, as it happened, and could 

 not find any trace of the female among them. When shut up in a box they sur- 

 vived but a few minutes, and all the limbs curled up. 



There are two other small Diptera known, which seem to bear an affinity to this 

 species viz., Corynocera ambigua, Zett. Ins. Lap. 856, 1, from the shore of an 

 Alpine lake in Lapland; and Monodicrana terminalis, Loew Bernst. Fna. 32, an 

 amber insect. 



Fam. DOLICHOPID^I. 

 Dolichopus prsetextatus, pi. 2, fig. 5. 



Pallide viridi-eeneus^ antennis nigris, arista glaberrima, pedibus flavis, tarsis 

 posticis fuscis basi flavis, alls apice nigro-marginatis, alulis pallido-ciliatis, 

 lamellis obtusis fuscis, Mas. (Metatarso postico mutico, ciliis genarum pallidis}. 



Long 2, Exp. 5 lines. Robust ; brassy-green, with hoary bloom ; the thorax 

 faintly streaked in front. Face narrow, shorter than the eyes, silvery white ; 

 lower occiput with yellowish beard. Antennae black, short, third joint obcordate. 

 Arista glabrous, arched, the penultimate joint as long as the third of antennae, the 

 last twice as long, slender. Palpi black. Wings hyaline, the tip with a narrow 

 black edge, the hind margin sinuated, the subcostal areolet long, the subapical vein 

 sinuated, the discal veinlet straight. Alulae with pale fringe. Legs rather short, 

 testaceous ; coxae cinereous ; femora below, the anterior pairs only at the base, 

 ciliated with fine pale hairs ; the posterior ones above ciliated with black bristles ; 

 before the tip, in front, two spines on the middle, one on the hind thigh. Fore 

 tarsus short, the metatarsus as long as the following three joints together ; middle 

 tarsus dusky at the joints, hind pair dusky, with only the base of the metatarsus 

 yellowish ; this is spineless and shorter than the following joint. Hypopygium, 

 two-thirds of the length of the abdomen, and closely applied to the ventral surface ; 

 aculeus shorter than it, internally bidentate, the tip produced into a straight spine ; 

 next a forceps, with nearly linear arms, angulated near the tip ; near the apex another 

 forceps, with broader, somewhat curved, triangular lobes, pale, with dusky tip, 

 extending beyond the lamellae, which are blackish brown, broad at the tip, obtuse, 

 and slightly ciliated. The length of the subcostal areolets indicates an approach to 

 Argyra. 



A single specimen found among the sea-reeds, on the sandhills of Rossbegh 

 Point (Kerry), in July. 



Khaphium flavicolle, pi. 2, fig. 6. 



Mg. Zw. iv. 56. 24. Wlk. Ins. Br. i. 195. l.Pallidum, Ztt. 

 Aphrosylus celtiber, pi. 2, tig. 7. 



Obscure schistaceus, femoribus apice posterioribus fere totis rufopiceis, antennis 

 nigris ; Mas, lamellis fuscis longe crinitis t tarsi antici articulis 2 primis subin- 

 crassatis. 



Long 2, Exp. 5 lines. Dark slate-gray, head above and mesonotum. 

 blackish, the latter with two faint lighter streaks in front. Antennae black ; third 

 joint conical, thickened at the base, twice as long as the two preceding together in 

 female, yet longer in male. Arista about as long as the antenna, naked, thick 

 at the base, very slender at the tip. Face ochre-brown ; epistoma blackish, in male 

 hoary. Proboscis black and glossy, except the wrinkled membranous space at the 

 base in front. Palpi dusky ferruginous ; outwardly silvered and naked in male, 

 duller white and with black pubescence in female. Beard yellowish, with some 

 blackish hairs next the orbit. Prosternum at each side, with three black 

 spines (as in A. raptor). Wings sooty-hyaline, with blackish veins. Legs 

 grayish black, the fore femora rufescent at the tip, the posterior femora almost 

 wholly piceous ; the armature of the legs as in A. raptor, the spur of fore tibia 

 springing directly from the straight tip of this, under the thin, fluted, whitish, 

 transparent edge. In the male, the fore metatarsus is gradually thickened to the 



